Description: 【3D Printer Accessory】: Designed specifically for the K1/K1C/Ender3-V3 models, this extruder drive gear kit is an essential upgrade for enhancing your 3D printing experience 【Sturdy Construction】: Crafted from quality metal, these gears are built to withstand the rigors of continuous use, ensuring long term performance and reliability in your 3D printing projects 【Advanced DLC Coating】: The gears feature a Diamond-Like Carbon (DLC) coating that provides great hardness and wear resistance, reducing friction and extending the lifespan of your extruder components 【Compact Dimensions】: With a size of 16*9.6mm, these gears are designed to fit seamlessly into your existing setup without requiring additional modifications or adjustments 【Convenient Packaging】: Each purchase includes two extruder gear kits, providing you with a spare set for future use or immediate installation on multiple printers Specification: Material: Metal Size Chart: W*L: 1.6cmx0.96cm/0.63inchx0.38inch Package Includes: 2 Extruder Filament Drive Gears Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.